Unit 5, Lesson 15# Multiplication and Division of Fractions: Lesson 15 (Multiplying with Mixed Numbers)

Match Fishtank 50 min(s)

In this lesson, students will develop a general method to multiply with mixed numbers. Deduce a generalized method for multiplying a mixed number times a mixed number by computing all of the partial products and adding them together using either an area model or the distributive property. Use the generalized method of computing products of fractions of fractions to deduce a generalized method for multiplying a mixed number times a mixed number by converting them to fractions greater than 1 and multiplying the numerators and denominators together. Decide which generalized method for computing products of mixed numbers will be most efficient for a particular problem and use it to compute the product.